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In quantum mechanics, the passing of a particle through a seemingly impenetrable barrier without a cause that is explainable by classical physics.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈtʌn l ɪŋ)
a quantum-mechanical process, forbidden in classical mechanics, in which an atomic particle passes through a region where its potential energy is higher than its total energy. Also, esp. Brit.,tun′nel•ling. Also called tun′nel effect`.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


Illegally diverting company funds or lucrative contracts to a company insider or majority shareholder thereby lessening the value of the holdings of minor shareholders.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in periodicals archive ?
The interaction between tunneling in sand and surface structures is investigated by centrifuge to show the result that assuming a no-tension interface between the soil and the structure is essential to the soil-structure interaction [19].
'The department does not have such kind of experience in handling a project like this since it lacks technical expertise in the field of highway tunneling,' he said, adding that to overcome the challenges it is necessary to develop human resource in the field of tunnel engineering prior to starting the project.
The deepest point of Tunneling in Phase III will be 29 meters deep as the tunnel will be made under the existing operational HauzKhas metro station.
The tunnel has been built using the New Austrian Tunneling Method ( NATM) for the first time in India.
Hamas has a visible presence in the tunneling zone, but only to register workers' complaints against their employers and to prevent the smuggling of drugs and weapons by regular tunnelers.
Bonner, president of the National Border Patrol Council, told THE NEW AMERICAN that despite the sophisticated technical means used by the Border Patrol to discover tunneling operations, "most of the tunnels that have been discovered have been the result of plain, dumb luck.
* New Tunnel Recommended Option--Service between Jamaica & Lower Manhattan and JFK & Lower Manhattan using: the AirTrain/JFK route, the converted Atlantic Branch, new tunneling in Brooklyn, a new East River tunnel, and new tunneling in Manhattan.
To begin this discussion, let's examine "traditional" VPNs, which rely on an encapsulation (tunneling) and an encryption model to securely transport data between two locations.
The quantum mechanical phenomenon of tunneling, which allows a system to go from one state to another through a region that is classically forbidden, has been observed since the early days of quantum mechanics.
So far, engineers have begun tunneling work entrances in the mountain.
But in the quantum-mechanical realm of atoms, electrons, and photons, such "tunneling" behavior has a small but significant probability of occurring.